false
Catalog
2021 Workshop Handout Bundle
Myopathies: EDX Approach- Kushlaf
Myopathies: EDX Approach- Kushlaf
Back to course
Pdf Summary
Myopathies are a group of disorders that affect the muscle tissue and can be caused by various factors including genetic, acquired, metabolic, toxic, and inflammatory conditions. In order to diagnose myopathies, electrodiagnostic (EDX) testing is conducted, which includes nerve conduction studies (NCS) and needle electromyography (EMG) to assess the integrity and function of muscles and motor neurons. The physical examination guides the EDX testing, with the needle EMG being the most important component of the assessment. The specific muscles tested during the needle EMG depend on the suspected type of myopathy being evaluated. Additional information can be obtained from muscle tissue sampling or muscle biopsy. However, the number and selection of muscles to test during the EMG is not clearly defined. In cases of myopathy, there may be abnormal insertional activity and spontaneous activity such as positive sharp waves, fibrillation potentials, myotonic discharges, and complex repetitive discharges. These findings indicate disruptions in muscle function and can help diagnose the specific type of myopathy. Some common types of myopathies include inflammatory myopathies, Duchenne muscular dystrophy, myotonic dystrophy, congenital myopathies, mitochondrial myopathies, critical illness myopathy, and endocrinological/toxic myopathies. However, the EDX findings are not diagnostic for a specific type of myopathy and further diagnostic tests may be necessary. Overall, EDX testing plays a crucial role in the evaluation and diagnosis of myopathies.
Keywords
myopathies
muscle tissue
genetic
acquired
metabolic
toxic
inflammatory conditions
electrodiagnostic testing
nerve conduction studies
needle electromyography
ncs
2621 Superior Drive NW
Rochester, MN
P
507.288.0100
F
507.288.1225
aanem@aanem.org
Terms of Use
Privacy Statement
© 2024 American Association of Neuromuscular & Electrodiagnostic Medicine
×
Please select your language
1
English